linux-kernel - Re: [PATCH 05/13] lib min_heap: Add min_heap

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Date: Wed, 20 Mar 2024 10:56:47 +0800
From: Kuan-Wei Chiu <visitorckw@...il.com>
To: Ian Rogers <irogers@...gle.com>
Cc: colyli@...e.de, kent.overstreet@...ux.dev, msakai@...hat.com,
	peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
	namhyung@...nel.org, akpm@...ux-foundation.org, bfoster@...hat.com,
	mark.rutland@....com, alexander.shishkin@...ux.intel.com,
	jolsa@...nel.org, adrian.hunter@...el.com, jserv@...s.ncku.edu.tw,
	linux-bcache@...r.kernel.org, dm-devel@...ts.linux.dev,
	linux-bcachefs@...r.kernel.org, linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/13] lib min_heap: Add min_heap_init()

On Tue, Mar 19, 2024 at 12:51:22PM -0700, Ian Rogers wrote:
> On Tue, Mar 19, 2024 at 11:00 AM Kuan-Wei Chiu <visitorckw@...il.com> wrote:
> >
> > Add min_heap_init() for initializing heap with data, nr, and size.
> >
> > Signed-off-by: Kuan-Wei Chiu <visitorckw@...il.com>
> 
> Should this change update lib/test_min_heap.c to use min_heap_init?
> 
Sure, will do that in v2.

Regards,
Kuan-Wei
> 
> > ---
> >  include/linux/min_heap.h | 12 ++++++++++++
> >  1 file changed, 12 insertions(+)
> >
> > diff --git a/include/linux/min_heap.h b/include/linux/min_heap.h
> > index c3635a7fdb88..ed462f194b88 100644
> > --- a/include/linux/min_heap.h
> > +++ b/include/linux/min_heap.h
> > @@ -44,6 +44,18 @@ struct min_heap_callbacks {
> >         void (*swp)(void *lhs, void *rhs);
> >  };
> >
> > +/* Initialize a min-heap. */
> > +static __always_inline
> > +void __min_heap_init(struct __min_heap *heap, void *data, int size)
> > +{
> > +       heap->data = data;
> > +       heap->nr = 0;
> > +       heap->size = size;
> > +}
> > +
> > +#define min_heap_init(_heap, _data, _size)     \
> > +       __min_heap_init(&(_heap)->heap, _data, _size)
> > +
> >  /* Sift the element at pos down the heap. */
> >  static __always_inline
> >  void __min_heapify(struct __min_heap *heap, int pos, size_t elem_size,
> > --
> > 2.34.1
> >